Java Programming - MCQ Practice Questions

Which of the following is the correct syntax to declare a variable in Java?

Which keyword is used to create a constant variable in Java?

What will be the output of the following code? int x = 5; x += 3; System.out.println(x);

Which of the following is NOT a primitive data type in Java?

What is the size of 'char' data type in Java?

Which of the following will compile without error? public static void main(String args[]) { int x = 10; final int y = 20; y = 30; }

What is the output of: System.out.println($\frac{10}{3}$);

Which operator has the highest precedence in Java?

What is the output of: System.out.println(5 > 3 ? 'A' : 'B');

Which statement is correct about Java variables?

Consider the code: int a = 5; int b = a++; System.out.println(a + " " + b); What is the output?

What will be printed? System.out.println(10 + 20 + "Java");

Identify the output: System.out.println("Java".length());

What is the scope of a local variable in Java?

Which of the following is the correct way to declare and initialize an array in Java?

What will be the output of: boolean flag = true; System.out.println(!flag);

Consider: int x = 0; System.out.println(x == 0 && x != 1); What is the output?

What will be the output of: System.out.println($\frac{5}{2}$);

Which keyword is used to prevent a class from being inherited?

Which of the following is a valid variable name in Java?